82066187 has 8 divisors (see below), whose sum is σ = 98726400. Its totient is φ = 66640104.

The previous prime is 82066097. The next prime is 82066189. The reversal of 82066187 is 78166028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 82066187 - 2⁸ = 82065931 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 82066187.

It is not an unprimeable number, because it can be changed into a prime (82066189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308387 + ... + 308652.

It is an arithmetic number, because the mean of its divisors is an integer number (12340800).

Almost surely, 2^82066187 is an apocalyptic number.

82066187 is a deficient number, since it is larger than the sum of its proper divisors (16660213).

82066187 is a wasteful number, since it uses less digits than its factorization.

82066187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617065.

The product of its (nonzero) digits is 32256, while the sum is 38.

The square root of 82066187 is about 9059.0389666896. The cubic root of 82066187 is about 434.5650066521.

The spelling of 82066187 in words is "eighty-two million, sixty-six thousand, one hundred eighty-seven".